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  <title>接受套接字上的连接</title>
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  <div id="layout-content"><div id="function.socket-accept" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">socket_accept</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.1.0, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">socket_accept</span> &mdash; <span class="dc-title">接受套接字上的连接</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.socket-accept-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>socket_accept</strong></span>(<span class="methodparam"><span class="type"><a href="class.socket.html" class="type Socket">Socket</a></span> <code class="parameter">$socket</code></span>): <span class="type"><span class="type"><a href="class.socket.html" class="type Socket">Socket</a></span>|<span class="type"><span class="type false">false</span></span></span></div>

  <p class="para rdfs-comment">
   <code class="parameter">socket</code> 是从 <span class="function"><a href="function.socket-create.html" class="function">socket_create()</a></span> 创建，使用 
   <span class="function"><a href="function.socket-bind.html" class="function">socket_bind()</a></span> 绑定，<span class="function"><a href="function.socket-listen.html" class="function">socket_listen()</a></span> 监听的一个套接字实例。此函数接受在 
   <code class="parameter">socket</code> 上创建的连接。当连接被成功创建后，返回一个可用于通信的 
   <span class="classname"><a href="class.socket.html" class="classname">Socket</a></span> 实例。若有多个连接排队，返回队头第一个连接。若没有待处理的连接，那么 
   <span class="function"><strong>socket_accept()</strong></span> 默认阻塞，直到有一个连接出现。如果 
   <code class="parameter">socket</code> 使用 <span class="function"><a href="function.socket-set-blocking.html" class="function">socket_set_blocking()</a></span> 或 
   <span class="function"><a href="function.socket-set-nonblock.html" class="function">socket_set_nonblock()</a></span> 设置为非阻塞，那么 
   <span class="function"><strong>socket_accept()</strong></span> 将直接返回 <strong><code>false</code></strong>。
  </p>
  <p class="para">
   <span class="function"><strong>socket_accept()</strong></span> 返回的 <span class="classname"><a href="class.socket.html" class="classname">Socket</a></span> 实例不能用于接受新的连接。但 
   <code class="parameter">socket</code> 依然保持打开状态，并且可以继续接受新的连接。
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.socket-accept-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">socket</code></dt>

     <dd>

      <p class="para">
       使用 <span class="function"><a href="function.socket-create.html" class="function">socket_create()</a></span> 创建的 <span class="classname"><a href="class.socket.html" class="classname">Socket</a></span> 实例。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.socket-accept-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回一个新的 <span class="classname"><a href="class.socket.html" class="classname">Socket</a></span> 实例，错误时返回 <strong><code>false</code></strong>。可以通过调用 
   <span class="function"><a href="function.socket-last-error.html" class="function">socket_last_error()</a></span> 来检索实际的错误代码。将错误代码作为参数传递给 
   <span class="function"><a href="function.socket-strerror.html" class="function">socket_strerror()</a></span> 以获得错误的文本解释。
  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-function.socket-accept-changelog">
  <h3 class="title">更新日志</h3>
  <table class="doctable informaltable">
   
    <thead>
     <tr>
      <th>版本</th>
      <th>说明</th>
     </tr>

    </thead>

    <tbody class="tbody">
     <tr>
      <td>8.0.0</td>
      <td>
       成功时，该函数现在返回一个 <span class="classname"><a href="class.socket.html" class="classname">Socket</a></span> 实例；在此之前，返回值是一个 <span class="type">resource</span>。
      </td>
     </tr>

    </tbody>
   
  </table>

 </div>


 <div class="refsect1 seealso" id="refsect1-function.socket-accept-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.socket-connect.html" class="function" rel="rdfs-seeAlso">socket_connect()</a> - 开启一个套接字连接</span></li>
    <li class="member"><span class="function"><a href="function.socket-listen.html" class="function" rel="rdfs-seeAlso">socket_listen()</a> - 监听套接字的连接</span></li>
    <li class="member"><span class="function"><a href="function.socket-create.html" class="function" rel="rdfs-seeAlso">socket_create()</a> - 创建一个套接字（通讯节点）</span></li>
    <li class="member"><span class="function"><a href="function.socket-bind.html" class="function" rel="rdfs-seeAlso">socket_bind()</a> - 给套接字绑定名字</span></li>
    <li class="member"><span class="function"><a href="function.socket-strerror.html" class="function" rel="rdfs-seeAlso">socket_strerror()</a> - 返回描述套接字错误的字符串</span></li>
   </ul>
  </p>
 </div>


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